Oil-reservoir.



E. W. DUNN.

OIL RESERVOIR.

APPLIOATION FILED 1120.14,1011.

Patented Jan. 28, 1913.

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UNITED STATES PATENT onnron.

EMANUEL W. DUNN, OF SAN FRANCISCO, CALIFORNIA.

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Specification of Ietters Patent. Patented J an. 28, 1913.

Application filed December 14, 1911. Serial No. 665,806.

To all whom it may concern.

Be it known that I, EMANUEL W. DUNN, a citizen of the United States, residing at the city and 'county of San Francisco and State of California, have invented new and useful Improvements in Oil-Reservoirs, of

which the following is a specification.

This invention'frelates to oil" controlling systems, and particularly to an oil or fluid reservoir or storage tank.

' The object of; the present invention is to provide means adapted to contain a supply of liquid, such as oil or other substance; and to provide means whereby the liquid in the tank may be so acted upon that it will flow with greater freedom, this being desirable especially in cold climates where the fluid,

as oil, is likely to become more or less thick, due to the absence of heat. a

It is a further object of the invention to ,:provide means wherebythe reservoir, which may be erected at any desired location and nying drawing, in which the figure is a vertical sectional view of the apparatus.

Many municipalities have ordinances regulating the erection of reservoirs, such as 2, which are erected in oil systems and are designed to contain the main body of oil from which the supply may be drawn by suitable pumping apparatus, not here shown, thence carried to a desired place. These ordinances frequently require that the reservoir 2 be located at some safe place about a building and often necessitate their construction underground, thereby rendering access difficult.

In order to enable the system to be supplied'with oil of good quality from that contained within the tank, I propose and have provided an apparatus whereby the lowermost strata of oil, liquid or sediment naturally collecting at the bottom of the reservoir may be exhausted at such intervals as necessary.

' \Vhile I have illustrated the reservoir 2 in the present instance as constructed of metal, it is understood that it may be made of any desired material. such as concrete, wood,

brick or the like. The upper portion of the reservoir is shown as closed with a crown or cover 3, having at a suitable location a. connection 4 provided with a valve 5,

through which connection a supply of oil may be admitted to the reservoir. able vent pipe 6 is also shown as connected to the dome 3, and 1s shown as having a A suit- '70 valve 7, which may be closed as desired. The 011 or liquid in the tank is adapted to be drawn therefrom through a suitable suction pipe 8, which may be connected to a pump, not shown, which in operation will draw the oil or liquid from the tank; the lower open end of the suction pipe8 in this instance terminating at an appropriate distance above the bottom of the reservoir '2. Preferably the lower end of the suction pipe 8 is elevated suiliciently above the bottom of the reservoir to insure that such oil as is drawn from the tank will be comparatively pure and not contaminated b or liquid which will accumu ate ordinarily at the lowermost portion of the reservoir.

the sediment For the purpose ofdecreasing the thick ness or density of the oil in the reservoir 2, when this is erected in such climates that the temperature becomes low enough to affeet the oil, I surround the suction pipe '8 with a tube 9 of suitable proportiomthe up: -per end of which is connected to a steam pipe 10 and on the lower end of the jacket or tube 9 is mounted a steam chamber 11,

which surrounds the lower open end of the suction pipe 8, so that when steam is adsteam jacket 9 and into the steam chamber 11, it will suiliciently increase the temperature of that portion of the body of oil immediately around the suction pipe, so'that its density, fluidity or flowing capacity is so mitted from the main line 10 through the cent to the bottom of the reservoir 2, so that its open end will be immersed in the sedinient or heavier material at the bottom of the tank. The suction pipe 13 extends upwardly through the dome 3 andm'ay be connected to the pump which ordinarily operates to draw oil from the reservoir. When the tank is being cleansed through the drain or suction pipe 13, the eduction pipe 8 is or may be cut out. While the cleansing of the tank is proceeding, as by exhausting the deleterious material through the pipe 13,

fluid, such as water or steam may be admitted to the upper part of the tank through a branch or supply. pipe 14, which is connected to a spray device 15 mounted in the upper end of the reservoir 2, so thatwhen steam is admitted through the spray device 15, it will scavenge the surface of the reservoir 2, precipitating such accretions as may adhere to the walls of the tank, thus thoroughly cleansing the structure; the undesirable material being removed from the depressed part of the tank through the suction device 13.

It will thus be seen that the present apparatus provides complete means for the normal withdrawal of a quantity of liquid from the tank, as by the suction pipe 8, the fluid being made thinner by the application of heat through the in'strumentality of the steam jacket 9.

volume.of liquid or oil, since the exhaust or drain pipe 13 extends down in and close to the bottom of the tank, it being well known that heavier ingredients and water contained in oil naturally gravitate and collect at the lower portion of its volume.

By. providing the scavenging device 15, the entire tank maybe thoroughly cleansed at suitable intervals without requiring the entire structure to be disturbed, this being especially an advantageous feature when the reservoir is located underground or while'in service. Manifestly the oil maybe discharged from the tank through the eduction ipe 8; or refuse through the drain pipe 13 y the application of pressure in the, tank.

Having thus described my invention, what a heating jacket inclosing said suction pipe and "spaced therefrom to permit the passa e of a heating medium in contact with said pipe, said jacket having an enlarged chamber in its lower end surrounding the inlet end of the pipe and an exhaust connection from said chamber.

2. The combination with a liquid con tainer, of a plurality of suction devices extending into the container, and having their ends indifferent planes, one of said suction pipes being 3' acketed with a heating appliance, said jacket having an enlarged chamberin its'lower end surrounding the-inlet endof the pipe and an exhaust connection from said chamber.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

EMANUEL W. DUNN. lVitnesses:

J orm H. HERRING, CHARLES EDELMAN.

I claim and desire to secure by Letters copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents, v

Washington, 1?. 0. 

